Calculating-machine



W. 0. J. ANDERSSON. CALCULATING MACHINE. APPLICATION FILED JUNE 3, 1919.

1,381, 9 Patented June 21,1921.

' @mmmsz ATT'Y.

f UNITEDSTQAKTEIS PATENT OFFICE.

wic'roaosKAitJULiUs Annnnsson, or MALMQ'SWEDEN;

CALCULATING-MACHINE.

' To (@U whom it may concern:

ieit known that I, VVICTOR Osman JULI S ANnnnssoN, a subject ofthe Kingof Sweden,

residing at Malmo, in the county of Malmohus and Kingdom of'SWeden, haveinvented new and useful Improvements in Calculating-'Machines, ofspecification. p

My invention relates to improvements in calculating machines, such forinstance, as that shown and described in Letters Patent of the UnitedStates No. 1,160,015, granted to Franz Trinks, under date of November-9,

1915, in which calculations are performed by means of setting diskshaving adjustable teeth or toothed wheels which transmitthe valuesrepresented bysaid teeth to a registering or counting mechanism. Andmore particularly the invention relates to improvements in calculatingmachines of. this 7 class in which a mechanism for counting therevolutions of the crank is provided,jwhich' I mechanism preferably"arranged coaxially with the registering mechanism is operated by meansof a pinrotating together with the setting disks and cooperating withone of the gear heels in the revolutions counting mechanism'by everyrevolution of .the crank. In case of division the dividend is first setinto the setting disks'and' transmitted to the main registeringmechanism by a revolution of the crank in the direction, as is usual inmachines of this class. Now the dividend is removed fromthe settingmechanism and replaced by the divisor; Meanwhile after the singlerevolution of the crank the revolutions counting mechanism indicates thenumber 1, which must be reset before the CllVlSlOl'l in order to avoid awrong quotient.

The object of'my invention is to avoid this special operation ofresetting the revolutions counting mechanism and for that reason I havearranged the pin that at each'revolution of the crank co'o'perates withthe respective gear wheel in the revolutions counting mechanismswingable in a direction transversely of the gear wheelsELIICl'PI'OVIdQd means for manually operating the pin from outside ofthe machine casing.

For the purpose ofexplaining the invention one embodiment thereof hasbeen illus trated in the accompanying drawings, in

which the same numerals of reference have been used in all the yiewstoindicate corresponding parts.

Specificationof Letters Patent. P te t d J une Application filed June 3.1919; Serial No. 301,533.

which the following is a In said drawing-Figure l, is a vertical crosssection of a machine embodying the inventioinFig. 2, is a plan view ofthe mechanism and partly in horizontal section illustrating the said pinin meshing position and Fig. 3, is a plan view similar to that shown inFig. 2 and illustrating thepin in disenv gaged position.

In the drawing, 1 indicates the setting wheelscarried on the shaft 2 andsecured thereto. The shaft 2 also carries at one end thereof the usualgear wheel 3 secured to the shaft- Q fland meshing with a gear wheel 5mounted ona shaft i. The gear wheel 5 is provided with; a pin 7swingably mounted on I "an opening in the side-wall 9 of the machinecasing and wedge'shaped.

When the arm lOrnormally held in the position illustrated in Fig. 2 ismanually depressed inward, the pin 7 will strike one of theinclinedsurfaces 12--(only one surface shown on the drawing) of thewedge 11 by rotation of the gear wheel 5 and will thereby swing out ofmeshing position. As soon as the dividend has been transmitted from thesetting wheels into the main register the Y arm 10 is released, so thatthe pin'will be able to return to its normal position vinto mesh withthe gear wheel 8 by the next rotation of the setting mechanism.

I wish it to be understood. hat this embodiment has been shown merelyfor the purpose of explaining the invent on and that various changes maybe made in the general arrangement and construction within the gist ofmy, invention.

: I claim herein as my invention:

1. In a calculatingmachine, the combi nation with a setting mechanismincluding disks, mechanism adapted to receive a value transmitted fromthe setting mechanism, a revolutions counting mechanism comprisingnumeral wheels and gear wheels and adapted for counting the revolutionsof the crank operating the setting mechanism, 01 a pin rotating togetherwith the setting disks and normally meshing with one of the gear wheelsin the revolutions counting mechanism at every revolution of the crank,said pin being swingable in a direction transversely of the lastmentioned gear wheels, and means for operating said pin "from outside ofthe machine casing.

2. In a calculating machine, the combination with a se mechanismincluding disks, mechanism adapted to receive a value transmitted fromthe setting mechanism, a revolutions counting mechanism comprisingnumeral wheels and gear wheels, and ad apted for counting therevolutions of the crank operating the setting mechanism, of a pinrotating together with the setting disks and normally meshing with oneof the gear wheels in the revolutions counting mechanism at everyrevolution of the crank, said pin being swingable in a directiontransversely of the last mentioned gear wheels, and a movable armsecured to a fined part of the machine and adapted to be manuallypressed and thereby to swing the pin out of meshing position. v

3. In a calculating machine, the combination. with a setting mechanismincluding disks, mechanism adapted to receive a value transmitted fromthe setting mechanism, a revolutions counting mechanism comprisingnumeral wheels and gear wheels, and adapted for counting the revolutionsof the crank operating the setting mechanism, of a pin rotating togetherwith, the setting disks and normally meshing with one of the gear whee sin the revolutions counting mechanism at every revolution of the crank,said pin being swingable in a direction transversely of the'last'mentioned gear wheels, and a movable arm secured to a fixed partof the machine and provided with a wedge adapted to be carried into thepath of the pin by manual pressing said arm thereby to effect theswinging of the pin out of meshing position when the pin during itsmotion strikes one of the inclined surfaces of the wedge.

In testimony whereof I have signed my name to this specification.

WICTOR OSKAR JULIUS ANDERSSON. lVitnesses EMIL HoDIN, V. Sonosrniirr.

